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Tailor-Made Aluminium Alloys = 45+ Grades. Cast to Spec.

Alloy chemistry built to spec, not to a catalogue.

Silverton produces aluminium alloy ingots to both JIS (Japanese) and BS (British) standards — more than 45 grades between the two systems, covering the range from general-purpose die casting alloys to the tighter tolerances automotive and electrical customers need among others.

Where our alloys go

Automobile

Wheel and piston alloys, cast for high-strength, leak-proof performance.

General Engineering

Components that can't tolerate porosity: pressure-tight housings, structural castings.

Electrical & Electronic

Precision foundry alloys held to tight JIS/BS chemical tolerances.

Compatible with all types of casting like PDC, HPDC, LPDC, GDC, and sand die casting.

Commonly Supplied Alloy Grades

Most frequently quoted grades by our metallurgical engineering team:

Grade Standard Typical Application & Metallurgical Properties
LM6 BS High silicon alloy used in electrical components
ADC12 JIS Silicon-Copper alloy Used in Automative & Industrial Equipment
AC4B JIS Used in Leak-proof components & low pressure die-casting
SCM 14 BS Magnesium zinc alloy widely used in power tools

Processes & Machines Gallery

Every batch moves through the same discipline: scrap sorting and testing → melting → degassing and metal treatment → in-process composition testing → casting → outbound quality check. It's the same process whether the order is 5 tonnes or 500.

JIS - Chemical Composition (% By Weight)

Aluminium Alloys Chemical Composition (%)

GradeSiFeCuMnMgCrNiZnTiPbSnAl
ADC1(AD1.1)11.0-13.00.9Max1.0Max0.3Max0.3Max-0.50Max0.50Max--0.30MaxBAL
ADC3(AD3.1)9.0-10.00.9Max0.30Max0.3Max--0.50Max1.00Max--0.20MaxBAL
ADC5(AD5.1)0.30Max0.90Max0.20Max0.30Max4.1-8.5-0.10Max0.10Max--0.10MaxBAL
ADC6(AD6.1)1.00Max1.10Max0.10Max0.40-0.62.6-4.0-0.40Max0.10Max--0.10MaxBAL
ADC10(AD10.1)7.5-9.51.00Max2.0-4.00.50Max0.50Max-1.00Max1.00Max--0.20MaxBAL
ADC10Z(AD10Z.1)7.5-9.50.9Max2.0-4.00.50Max0.50Max-0.50Max1.00Max--0.20MaxBAL
ADC12(AD12.1)9.6-12.00.9Max1.5-3.50.50Max0.30Max-0.50Max1.00Max--0.20MaxBAL
ADC12Z(AD12Z.1)9.6-12.00.9Max1.5-3.50.50Max0.30Max-0.50Max1.00Max--0.20MaxBAL
ADC14(AD14.1)16.0-18.00.9Max4.0-5.00.50-0.650.50-0.65-1.50Max0.30Max--0.30MaxBAL
AC1B(AC1B.1)0.2max0.3Max4.2-5.00.10Max0.05Max0.30Max0.05Max0.10Max0.05Max-0.30MaxBAL
AC2A(AC2A.1)4.0-6.00.7Max3.0-4.50.55Max0.25Max0.15Max0.30Max0.55Max0.20Max0.05Max0.20MaxBAL
AC2B(AC2B.1)5.0-7.00.8Max2.0-4.00.50Max0.25Max0.20Max0.35Max1.00Max0.20Max0.15Max0.20MaxBAL
AC3A(AC3A.1)10.0-13.00.7Max0.25Max0.35Max0.15Max-0.10Max0.20Max0.20Max0.10Max0.10MaxBAL
AC4A(AC4A.1)8.0-10.00.4max0.25Max0.15Max0.30-0.6-0.10Max0.20Max0.20Max0.10Max0.05MaxBAL
AC4B(AC4B.1)7.0-10.00.8Max2.0-4.00.50Max0.15Max-0.30Max1.00Max0.20Max0.10Max0.10MaxBAL
AC4C(AC4C.1)6.5-7.50.4Max0.25Max0.35Max0.20-0.35-0.10Max0.10Max0.20Max0.05Max0.05MaxBAL
AC4CH(AC4CH.1)6.5-7.50.17Max0.10max0.10Max0.25-0.45-0.05Max0.05Max0.20Max0.05Max0.05MaxBAL
AC4D(AC4D.1)4.5-5.50.50Max1.0-1.50.50Max0.45-0.6-0.20Max0.30Max-0.10Max0.05MaxBAL
AC5A(AC5A.1)0.60Max0.70Max3.5-4.50.35Max1.3-1.80.15Max1.7-2.30.15Max0.02Max0.05Max0.15MaxBAL
AC7A(AC7A.1)0.20Max0.25Max0.10Max0.60Max3.6-5.50.15Max0.15Max0.02Max0.20Max0.05Max0.15MaxBAL
AC8A(AC8A.1)11.0-13.00.8Max0.8-1.30.15Max0.7-1.30.10Max0.8-1.50.15Max0.02Max0.05Max0.05MaxBAL
AC8B(AC8B.1)8.5-10.50.80max2.0-4.00.50Max0.50Max0.10Max0.50Max0.15Max0.02Max0.10Max0.10MaxBAL
AC8C(AC8C.1)8.5-10.50.80Max2.0-4.00.50Max0.50Max0.10Max0.10Max0.15Max0.02Max0.10Max0.10MaxBAL
AC9A(AC9A.1)22.0-24.00.70Max0.50Max0.50Max0.6-1.50.10Max0.10Max0.10Max0.02Max0.10Max0.10MaxBAL
AC9B(AC9B.1)18.0-20.00.70Max0.50Max0.50Max0.5-1.50.10Max0.10Max0.10Max0.02Max0.10Max0.10MaxBAL

BS - Chemical Composition (% By Weight)

Aluminium Alloy Ingot Chemical Composition (%)

GradeSiFeCuMnMgCrNiZnTiPbSnAl
356.16.5-7.50.50Max0.25Max0.35Max0.20-0.45-0.30Max0.40Max-0.15Max-BAL
356.26.5-7.50.12Max0.10Max0.05Max0.30-0.45-0.05Max0.05Max0.20Max--BAL
A356.26.5-7.50.10Max0.10Max0.05Max0.30-0.45-0.05Max0.05Max---BAL
A360.19.0-10.01.00Max0.60Max0.35Max0.45-0.6-0.50Max0.50Max---BAL
A380.17.5-9.51.00Max3.0-4.00.50Max0.10Max0.50Max2.90Max3.00Max-0.35Max0.15MaxBAL
A413.111.0-13.01.00Max1.00Max0.35Max0.10Max0.50Max0.50Max0.40Max-0.15Max-BAL
LM29.0-11.51.00Max0.7-2.50.50Max0.30Max0.10Max0.20Max2.00Max-0.30Max0.10MaxBAL
LM44.0-6.01.00Max2.0-4.00.2-0.60.2-0.6-0.10Max0.20Max-0.10Max0.05MaxBAL
LM50.30Max0.60Max0.10Max0.3-0.73.0-6.0-0.10Max0.10Max0.20Max0.05Max0.05MaxBAL
LM610.0-13.00.60Max0.10Max0.50Max0.10Max-0.10Max0.10Max0.20Max0.10Max0.05MaxBAL
LM910.0-13.00.60Max0.10Max0.30-0.70.20-0.6-0.10Max0.10Max0.20Max0.10Max0.05MaxBAL
LM100.25Max0.60Max0.10Max9.5-11.00.10Max-0.10Max0.10Max0.20Max0.10Max0.10MaxBAL
LM122.50Max1.00Max9.0-11.00.50Max0.2-0.6-0.50Max0.80Max0.20Max0.30Max0.20MaxBAL
LM1310.0-13.01.00Max0.7-1.50.50Max0.7-1.5-1.50Max0.50Max0.20Max0.10Max0.10MaxBAL
LM164.5-5.50.60Max1.0-1.50.50Max0.4-0.6-0.10Max0.10Max0.20Max0.10Max0.05MaxBAL
LM184.5-6.00.60Max0.10Max0.50Max0.10Max-0.10Max0.10Max0.20Max0.10Max0.05MaxBAL
LM2010.0-13.01.00Max0.40Max0.50Max0.10Max-0.10Max0.10Max0.20Max0.10Max0.05MaxBAL
LM215.0-7.01.00Max3.0-5.00.2-0.60.1-0.3-0.30Max1.00Max0.20Max0.20Max0.10MaxBAL
LM224.0-6.00.60Max2.8-3.80.2-0.60.05Max-0.50Max0.30Max0.30Max0.10Max0.20MaxBAL
LM247.5-9.51.30Max3.0-4.00.50Max0.30Max-1.00Max3.00Max0.20Max0.20Max0.20MaxBAL
LM256.5-7.50.50Max0.20Max0.30Max0.2-0.6-0.10Max0.10Max0.20Max0.10Max0.05MaxBAL
LM268.5-10.51.20Max2.0-4.00.50Max0.5-1.5-1.00Max1.00Max0.20Max0.10Max0.10MaxBAL
LM276.0-8.00.80Max0.70Max0.2-0.60.35Max-0.30Max1.00Max0.20Max0.10Max0.30MaxBAL
LM2817.0-20.00.70Max1.3-1.80.60Max0.8-1.30.60Max0.20Max0.20Max0.20Max0.10Max0.10MaxBAL
LM2922.0-25.00.70Max0.8-1.30.60Max0.8-1.30.60Max0.20Max0.20Max0.10Max0.10Max0.10MaxBAL
LM3016.0-18.01.10Max4.0-5.00.30Max0.4-0.7-0.10Max0.20Max0.20Max0.10Max0.10MaxBAL
LM310.25Max0.5Max0.10Max0.10Max0.50-0.750.10Max4.8-5.70.25Max0.05Max0.10Max0.05MaxBAL